1 #[cfg(target(os = "x"))] //~ ERROR compact `cfg(target(..))` is experimental 2 struct Foo(u64, u64); 3 4 #[cfg_attr(target(os = "x"), x)] //~ ERROR compact `cfg(target(..))` is experimental 5 struct Bar(u64, u64); 6 7 #[cfg(not(any(all(target(os = "x")))))] //~ ERROR compact `cfg(target(..))` is experimental foo()8fn foo() {} 9 main()10fn main() { 11 cfg!(target(os = "x")); 12 //~^ ERROR compact `cfg(target(..))` is experimental and subject to change 13 } 14